/* ============================================================
   RPTP · 宣传站样式
   配色/字体集中在 :root，改这里就能换风格
   ============================================================ */

@font-face{font-family:"Cinzel";src:url("../fonts/cinzel-latin-400-normal.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Cinzel";src:url("../fonts/cinzel-latin-600-normal.woff2") format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Inter";src:url("../fonts/inter-latin-400-normal.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url("../fonts/jetbrains-mono-latin-400-normal.woff2") format("woff2");font-weight:400;font-display:swap}

/* 中文子集（Noto Serif/Sans CJK SC，仅打包页面用到的字） */
@font-face{font-family:"RPTP Serif";src:url("../fonts/rptp-serif-400.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"RPTP Serif";src:url("../fonts/rptp-serif-700.woff2") format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"RPTP Sans";src:url("../fonts/rptp-sans-400.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"RPTP Sans";src:url("../fonts/rptp-sans-700.woff2") format("woff2");font-weight:700;font-display:swap}

:root{
  --bg:#070908;
  --bg-2:#0a100d;
  --ink:#edf2ee;
  --ink-2:#b0bdb6;
  --ink-3:#68736d;
  --line:rgba(237,242,238,.09);
  --line-2:rgba(237,242,238,.16);
  --accent:#4fe0a8;
  --accent-2:#7fc8ff;
  --warm:#e5c69e;
  --deep:#0e2a24;

  --f-display:"Cinzel","RPTP Serif","Songti SC","Noto Serif SC",serif;
  --f-body:"Inter","RPTP Sans",-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  --max:1180px;
  --pad:clamp(20px,5vw,64px);
  --ease:cubic-bezier(.16,1,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--f-body);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
code{font-family:var(--f-mono);font-size:.9em;color:var(--accent);background:rgba(79,224,168,.08);padding:.1em .4em;border-radius:4px}
::selection{background:rgba(79,224,168,.25)}

/* ---------- 全局装饰层 ---------- */
.grain{
  position:fixed;inset:0;z-index:2;pointer-events:none;opacity:.045;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode:overlay;
}
.progress{
  position:fixed;top:0;left:0;height:2px;width:0;z-index:60;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  box-shadow:0 0 12px rgba(79,224,168,.5);
}
.glow-cursor{
  position:fixed;top:0;left:0;width:540px;height:540px;z-index:1;pointer-events:none;
  border-radius:50%;opacity:0;transition:opacity .6s ease;
  background:radial-gradient(circle,rgba(79,224,168,.13),rgba(127,200,255,.06) 38%,transparent 66%);
  mix-blend-mode:screen;transform:translate(-50%,-50%);
}
@media (pointer:fine){ .glow-cursor{opacity:1} }

/* ---------- 导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;gap:clamp(16px,4vw,48px);
  padding:0 var(--pad);height:72px;
  transition:background .4s ease,border-color .4s ease,height .4s ease,backdrop-filter .4s ease;
  border-bottom:1px solid transparent;
}
.nav.is-scrolled{
  height:62px;background:rgba(7,9,8,.72);backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line);
}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--f-display);letter-spacing:.22em;font-size:15px}
.brand-mark{width:20px;height:20px;color:var(--accent);flex:0 0 auto}
.brand-text{font-weight:600}
.nav-links{display:flex;gap:clamp(14px,2.4vw,30px);margin-left:auto;font-size:14px;color:var(--ink-2)}
.nav-links a{position:relative;padding:6px 0;transition:color .3s}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .45s var(--ease);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{transform:scaleX(1)}
.ip-chip{
  display:flex;align-items:center;gap:8px;height:36px;padding:0 14px;
  border:1px solid var(--line-2);border-radius:999px;font-family:var(--f-mono);font-size:13px;
  transition:border-color .3s,background .3s,transform .3s;
}
.ip-chip:hover{border-color:rgba(79,224,168,.5);background:rgba(79,224,168,.06);transform:translateY(-1px)}
.ip-chip .copy-hint{color:var(--ink-3);font-size:11px;letter-spacing:.08em}
.pulse{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 rgba(79,224,168,.6);animation:pulse 2.4s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 9px rgba(79,224,168,0)}100%{box-shadow:0 0 0 0 rgba(79,224,168,0)}}
@media (max-width:860px){ .nav-links{display:none} }

/* ---------- HERO ---------- */
.hero{
  position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  padding:120px var(--pad) 80px;overflow:hidden;isolation:isolate;
}
.hero-bg{position:absolute;inset:0;z-index:-1;overflow:hidden}
/* ---------- 全站背景层：缓慢漂移的极光光斑 + 尘埃画布 ---------- */
.bg{position:fixed;inset:0;z-index:-3;overflow:hidden;pointer-events:none;contain:strict}
.bg-blob{
  position:absolute;border-radius:50%;filter:blur(120px);opacity:.55;
  will-change:translate,transform;animation:float 78s ease-in-out infinite;
}
.bg-blob.b1{width:72vw;height:72vw;left:-20vw;top:-24vw;background:radial-gradient(circle,rgba(79,224,168,.22),transparent 64%);animation-duration:74s}
.bg-blob.b2{width:64vw;height:64vw;right:-22vw;top:16vh;background:radial-gradient(circle,rgba(127,200,255,.18),transparent 66%);animation-duration:96s;animation-direction:reverse}
.bg-blob.b3{width:54vw;height:54vw;left:20vw;top:60vh;background:radial-gradient(circle,rgba(229,198,158,.12),transparent 68%);animation-duration:118s}
.bg-blob.b4{width:46vw;height:46vw;right:4vw;bottom:-16vw;background:radial-gradient(circle,rgba(136,142,255,.14),transparent 68%);animation-duration:88s}

@keyframes float{
  0%,100%{transform:translate3d(0,0,0) scale(1)}
  33%{transform:translate3d(3vw,-4vh,0) scale(1.07)}
  66%{transform:translate3d(-3vw,3vh,0) scale(.96)}
}

#dust{position:absolute;inset:0;display:block;width:100%;height:100%;opacity:.9;filter:blur(.3px)}

/* hero 静态柔光（原来的三个会动光斑，现在统一交给全站光斑） */
.halo{
  position:absolute;left:50%;top:46%;width:76vw;height:56vh;transform:translate(-50%,-50%);
  background:radial-gradient(closest-side,rgba(79,224,168,.20),rgba(127,200,255,.07) 46%,transparent 72%);
  filter:blur(54px);
}

@media (max-width:760px){
  .bg-blob{filter:blur(70px);opacity:.45}
  .bg-blob.b1,.bg-blob.b2{width:110vw;height:110vw}
  .bg-blob.b3,.bg-blob.b4{width:92vw;height:92vw}
}

.ground{
  position:absolute;left:-2%;width:104%;height:15vh;bottom:-1px;will-change:transform;
  background:linear-gradient(180deg,rgba(23,64,56,.55),rgba(10,20,17,.9) 55%,#070908 100%);
  clip-path:polygon(0 55%,3% 55%,3% 42%,6% 42%,6% 50%,9% 50%,9% 34%,12% 34%,12% 46%,15% 46%,15% 60%,18% 60%,18% 48%,21% 48%,21% 30%,24% 30%,24% 44%,27% 44%,27% 56%,30% 56%,30% 38%,33% 38%,33% 52%,36% 52%,36% 64%,39% 64%,39% 42%,42% 42%,42% 30%,45% 30%,45% 48%,48% 48%,48% 58%,51% 58%,51% 40%,54% 40%,54% 26%,57% 26%,57% 44%,60% 44%,60% 56%,63% 56%,63% 36%,66% 36%,66% 50%,69% 50%,69% 62%,72% 62%,72% 44%,75% 44%,75% 32%,78% 32%,78% 46%,81% 46%,81% 58%,84% 58%,84% 40%,87% 40%,87% 52%,90% 52%,90% 62%,93% 62%,93% 46%,96% 46%,96% 56%,100% 56%,100% 100%,0 100%);
  opacity:.5;
}
.vignette{position:absolute;inset:0;background:radial-gradient(120% 80% at 50% 30%,transparent 40%,rgba(7,9,8,.75) 100%)}
.horizon{position:absolute;left:-10%;right:-10%;bottom:10vh;height:34vh;background:radial-gradient(55% 100% at 50% 100%,rgba(79,224,168,.16),rgba(127,200,255,.06) 42%,transparent 74%);filter:blur(40px)}

.hero-inner{position:relative;width:100%;max-width:var(--max);margin:0 auto;text-align:center}
.eyebrow{
  font-family:var(--f-mono);font-size:11px;letter-spacing:.34em;text-transform:uppercase;
  color:var(--ink-3);margin:0 0 22px;
}
.wordmark{
  position:relative;margin:0;
  font-family:var(--f-display);font-weight:600;
  font-size:clamp(64px,15vw,190px);line-height:.86;letter-spacing:.14em;
}
/* 背后柔光：用伪元素做，避免 filter 破坏文字渐变裁切 */
.wordmark::before{
  content:"";position:absolute;left:-12%;top:-40%;width:124%;height:180%;z-index:-1;
  background:radial-gradient(closest-side,rgba(79,224,168,.22),rgba(127,200,255,.08) 60%,transparent 78%);
  filter:blur(28px);pointer-events:none;
}
.wordmark span{
  display:inline-block;opacity:0;will-change:transform,opacity;
  transform:translateY(115%);
  background:linear-gradient(180deg,#ffffff 8%,#e2f8ee 46%,rgba(79,224,168,.72) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  animation:rise .95s var(--ease) forwards;
}
@keyframes rise{to{transform:translateY(0);opacity:1}}
.hero-sub{
  display:flex;align-items:center;justify-content:center;gap:16px;margin:28px 0 0;
  font-family:var(--f-display);font-size:clamp(17px,2.1vw,24px);letter-spacing:.22em;color:var(--ink);
}
.dot-sep{width:5px;height:5px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}
.hero-desc{margin:22px auto 0;max-width:40ch;color:var(--ink-2);font-size:clamp(14px,1.5vw,16px);line-height:2}
.hero-cta{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:40px}
.btn{
  display:inline-flex;align-items:center;gap:12px;height:52px;padding:0 26px;border-radius:999px;
  font-size:14px;letter-spacing:.04em;transition:transform .4s var(--ease),background .3s,border-color .3s,box-shadow .4s;
}
.btn-primary{background:var(--accent);color:#04120c;font-weight:600;box-shadow:0 12px 40px -12px rgba(79,224,168,.7)}
.btn-primary b{font-family:var(--f-mono);font-weight:400;font-size:13px;opacity:.75;padding-left:12px;border-left:1px solid rgba(4,18,12,.25)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 50px -14px rgba(79,224,168,.85)}
.btn-ghost{border:1px solid var(--line-2);color:var(--ink-2)}
.btn-ghost:hover{border-color:rgba(237,242,238,.35);color:var(--ink);transform:translateY(-2px)}

.hero-meta{display:flex;flex-wrap:wrap;justify-content:center;gap:clamp(24px,5vw,64px);margin:54px 0 0;padding-top:24px;border-top:1px solid var(--line)}
.hero-meta div{display:flex;flex-direction:column;gap:5px;align-items:center}
.hero-meta dt{font-family:var(--f-mono);font-size:10px;letter-spacing:.26em;text-transform:uppercase;color:var(--ink-3)}
.hero-meta dd{margin:0;font-size:14px;letter-spacing:.04em;color:var(--ink)}
.status{display:flex;align-items:center;gap:8px}
.status.is-online i{background:var(--accent)}
.status.is-offline i{background:var(--ink-3);animation:none;box-shadow:none}
.status.is-offline span{color:var(--ink-3)}
.scroll-hint{
  position:absolute;left:50%;bottom:26px;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:10px;
  font-family:var(--f-mono);font-size:10px;letter-spacing:.3em;color:var(--ink-3);
}
.scroll-hint i{display:block;width:1px;height:44px;background:linear-gradient(180deg,var(--accent),transparent);animation:scrollLine 2.6s ease-in-out infinite}
@keyframes scrollLine{0%,100%{transform:scaleY(.35);opacity:.4}50%{transform:scaleY(1);opacity:1}}
@media (max-width:640px){ .scroll-hint{display:none} }

/* ---------- 跑马灯 ---------- */
.marquee{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:20px 0;overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
          mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
}
.marquee-track{display:flex;align-items:center;gap:34px;width:max-content;animation:scrollX 46s linear infinite}
.marquee-track span{font-family:var(--f-display);font-size:clamp(15px,1.7vw,20px);letter-spacing:.22em;color:var(--ink-2);white-space:nowrap}
.marquee-track em{color:var(--accent);opacity:.6;font-style:normal}
@keyframes scrollX{to{transform:translateX(-50%)}}

/* ---------- 通用区块 ---------- */
.section{max-width:var(--max);margin:0 auto;padding:clamp(88px,12vh,150px) var(--pad) 0}
.section-head{margin-bottom:clamp(34px,5vw,60px)}
.section-head h2{
  font-family:var(--f-display);font-weight:400;margin:0;
  font-size:clamp(30px,4.4vw,58px);line-height:1.24;letter-spacing:.04em;
}
.hint{margin:16px 0 0;color:var(--ink-3);font-size:13px;font-family:var(--f-mono);letter-spacing:.02em}

/* ---------- 关于 ---------- */
.about-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:clamp(30px,5vw,72px);align-items:start}
.lead{margin:0;font-size:clamp(15px,1.7vw,18px);line-height:2.1;color:var(--ink-2)}
.lead b{color:var(--ink);font-weight:500}
.facts{display:flex;flex-direction:column;gap:0;margin:0}
.facts div{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.facts div:first-child{border-top:1px solid var(--line)}
.facts span{font-size:12px;letter-spacing:.14em;color:var(--ink-3)}
.facts b{font-family:var(--f-mono);font-weight:400;font-size:14px;color:var(--ink)}
@media (max-width:820px){ .about-grid{grid-template-columns:1fr} }

/* ---------- 特色卡片 ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{
  position:relative;padding:30px 28px 34px;border:1px solid var(--line);border-radius:16px;
  background:linear-gradient(180deg,rgba(237,242,238,.035),rgba(237,242,238,.008));
  transition:transform .5s var(--ease),border-color .4s,background .4s;
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;inset:0;opacity:0;transition:opacity .5s;
  background:radial-gradient(420px 200px at 50% 0%,rgba(79,224,168,.12),transparent 70%);
}
.card:hover{transform:translateY(-5px);border-color:rgba(79,224,168,.32)}
.card:hover::before{opacity:1}
.card-no{position:relative;font-family:var(--f-mono);font-size:11px;letter-spacing:.2em;color:var(--accent);opacity:.8}
.card h3{position:relative;margin:16px 0 10px;font-size:19px;font-weight:500;letter-spacing:.06em}
.card p{position:relative;margin:0;font-size:14px;line-height:1.9;color:var(--ink-2)}
@media (max-width:900px){ .cards{grid-template-columns:repeat(2,1fr)} }
@media (max-width:600px){ .cards{grid-template-columns:1fr} }

/* ---------- 景象 ---------- */
.frames{display:grid;grid-template-columns:repeat(12,1fr);gap:14px;align-items:start}
.frame{
  position:relative;margin:0;grid-column:span 4;aspect-ratio:16/10;
  border-radius:12px;overflow:hidden;border:1px solid var(--line);
  background:#0a0f0d;transition:border-color .4s,transform .6s var(--ease);
}
.frame:nth-child(1){grid-column:span 7}
.frame:nth-child(2){grid-column:span 5}
.frame:nth-child(3),.frame:nth-child(4),.frame:nth-child(5){grid-column:span 4}
.frame:nth-child(6){grid-column:span 6}
.frame:nth-child(7),.frame:nth-child(8){grid-column:span 3}
/* 同行内用不同比例，让高度对齐、底部齐平 */
.frame:nth-child(2){aspect-ratio:8/7}
.frame:nth-child(7),.frame:nth-child(8){aspect-ratio:4/5}
.frame:hover{border-color:rgba(79,224,168,.3);transform:translateY(-3px)}
.frame::after{content:"";position:absolute;inset:0;z-index:2;pointer-events:none;border-radius:inherit;box-shadow:inset 0 0 0 1px rgba(237,242,238,.05),inset 0 -60px 60px -40px rgba(0,0,0,.6)}
.frame img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:2;
  opacity:0;transition:opacity .7s ease,transform 1.1s var(--ease);
}
.frame img.is-loaded{opacity:1}
.frame:hover img.is-loaded{transform:scale(1.035)}
.frame .fallback{
  position:absolute;inset:0;z-index:1;display:grid;place-items:center;
  background:
    repeating-linear-gradient(0deg,rgba(255,255,255,.022) 0 1px,transparent 1px 26px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.022) 0 1px,transparent 1px 26px),
    linear-gradient(155deg,#16302a,#0b1a2a 58%,#0a0f0d);
}
.frame:nth-child(2n) .fallback{background:
    repeating-linear-gradient(0deg,rgba(255,255,255,.022) 0 1px,transparent 1px 26px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.022) 0 1px,transparent 1px 26px),
    linear-gradient(200deg,#1b2a3a,#122a24 55%,#0a0f0d)}
.frame:nth-child(3n) .fallback{background:
    repeating-linear-gradient(0deg,rgba(255,255,255,.022) 0 1px,transparent 1px 26px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.022) 0 1px,transparent 1px 26px),
    linear-gradient(165deg,#241f2e,#0f2a26 60%,#0a0f0d)}
.ghost{
  font-family:var(--f-display);font-size:clamp(56px,8vw,116px);letter-spacing:.1em;
  color:rgba(237,242,238,.10);user-select:none;
}
.frame figcaption{
  position:absolute;left:0;right:0;bottom:0;z-index:3;
  display:flex;align-items:center;gap:8px;padding:14px 16px;
  font-family:var(--f-mono);font-size:11px;letter-spacing:.16em;color:rgba(237,242,238,.72);
  background:linear-gradient(180deg,transparent,rgba(4,8,6,.82));
}
.frame figcaption span{color:var(--accent)}
@media (max-width:900px){
  .frame,.frame:nth-child(n){grid-column:span 6}
  .frame:nth-child(1),.frame:nth-child(2){grid-column:span 6}
}
@media (max-width:600px){ .frame,.frame:nth-child(n){grid-column:span 12} }

/* ---------- 加入 ---------- */
.steps{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3vw,40px);margin:0;padding:0}
.steps li{position:relative;padding-top:26px;border-top:1px solid var(--line-2)}
.step-no{font-family:var(--f-display);font-size:13px;letter-spacing:.2em;color:var(--accent)}
.steps h3{margin:14px 0 10px;font-size:18px;font-weight:500;letter-spacing:.05em}
.steps p{margin:0;font-size:14px;line-height:1.95;color:var(--ink-2)}
.steps p b{color:var(--ink);font-family:var(--f-mono);font-weight:400}
@media (max-width:820px){ .steps{grid-template-columns:1fr} }

.join-cta{margin-top:clamp(56px,8vw,96px);text-align:center}
.join-label{font-family:var(--f-mono);font-size:11px;letter-spacing:.3em;text-transform:uppercase;color:var(--ink-3);margin:0 0 12px}
.ip-big{
  display:inline-flex;flex-direction:column;align-items:center;gap:4px;
  padding:14px 8px;position:relative;
}
.ip-text{
  font-family:var(--f-display);font-size:clamp(38px,8vw,86px);letter-spacing:.08em;line-height:1.1;
  background:linear-gradient(180deg,#fff,rgba(79,224,168,.8));-webkit-background-clip:text;background-clip:text;color:transparent;
  transition:filter .4s;
}
.ip-big::after{
  content:"";position:absolute;left:8px;right:8px;bottom:6px;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent),transparent);opacity:.5;
  transition:opacity .4s,transform .5s var(--ease);transform:scaleX(.85);
}
.ip-big:hover::after{opacity:1;transform:scaleX(1)}
.ip-big:hover .ip-text{filter:drop-shadow(0 0 30px rgba(79,224,168,.35))}
.ip-copy{font-family:var(--f-mono);font-size:11px;letter-spacing:.24em;color:var(--ink-3)}
.join-note{margin:18px 0 0;font-family:var(--f-mono);font-size:12px;letter-spacing:.1em;color:var(--ink-3)}

/* ---------- 页脚 ---------- */
.footer{
  max-width:var(--max);margin:clamp(80px,12vh,150px) auto 0;padding:40px var(--pad) 56px;
  border-top:1px solid var(--line);
}
.footer-top{display:flex;justify-content:space-between;align-items:baseline;gap:20px;flex-wrap:wrap}
.footer-brand{font-family:var(--f-display);font-size:22px;letter-spacing:.24em;margin:0}
.footer-tag{margin:0;font-size:12px;letter-spacing:.16em;color:var(--ink-3)}
.footer-bottom{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-top:26px}
.footer-bottom p{margin:0;font-size:12px;line-height:1.9;color:var(--ink-3);max-width:56ch}
.footer-meta{font-family:var(--f-mono);letter-spacing:.1em}

/* ---------- 滚动显形 ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.09s}
.reveal[data-delay="2"]{transition-delay:.18s}
.reveal[data-delay="3"]{transition-delay:.27s}
.reveal[data-delay="4"]{transition-delay:.36s}

/* ---------- 提示条 ---------- */
.toast{
  position:fixed;left:50%;bottom:34px;transform:translate(-50%,20px);
  padding:11px 22px;border-radius:999px;border:1px solid rgba(79,224,168,.35);
  background:rgba(10,20,16,.92);backdrop-filter:blur(10px);
  font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;color:var(--accent);
  opacity:0;pointer-events:none;transition:opacity .35s,transform .45s var(--ease);z-index:70;
}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

/* ---------- 无障碍 / 降级 ---------- */
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
  .wordmark span{transform:none;opacity:1}
}